THOMSON LDK 20 S, Operator'S Manual

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3-6 Operator's Manual LDK 20(S) - Studio Camera) Configurations
PLAYBACK
VIDEO
MON VID OUT CVBS OUT
VF
R
G
B
TP
EXT
R-Y
B-Y
VTR
ENCODER
(OPTIONAL)
VF
INDICATIONS
TRIAX
EXT SIGNAL
SELECTION
VF SIGNAL
SELECTION
or RET button
on the lens
VF MON
control signal
EXT2
Y
EXT1
EXT
BASE STATION
control signal
TRANSMITTER/
RECEIVER
COMPONENT
MATRIX
REMOTE/
LOCAL
Y
Video Routing
Main video path
When the camera is used in the triax mode, the R, G
and B video signals from the sensors are first subjected
to video processing and then pass to the multiplexer/
transmitter section which sends them to the base
station via the triax cable. The R, G and B video
signals are available for the studio as outputs on the
rear of the base station.
The R, G and B video signals from the video processing
circuits are used to produce R-Y and B-Y signals.
These signals are passed to the video recorder via the
26-pole cable.
Viewfinder video
The normal signal displayed in the viewfinder is the Y
signal. This is derived from the R, G and B video
signals from the video processing circuits. Additional
information is added to the viewfinder signal to provide
superimposed text and graphics. In the triax mode the
video signal for display in the viewfinder can be
selected from the above mentioned Y signal, the R, G
and B video signals, the inverted G signal, or an
external 1 or external 2 video signal. The external 1
and 2 video signal are input from the studio system to
the rear of the base station and are transmitted via the
triax cable to the camera. The external 1 and external
2 video signals can be viewed separately, or mixed
with internal signals.
Output signals
The camera has three video output connectors: two
on the left side and one on the right side. A teleprompter
output connector carries the signal which is input to
the teleprompter input on rear of the base station. The
VF output connector carries the signal which is
displayed in the viewfinder. The CVBS output
connector carries a signal which is derived from the R,
G and B video signals from the video processing
circuits (with encoder option only).
Playback
When the camera is used with a recorder, the
viewfinder can display the playback signal from the
recorder for monitoring purposes. This signal is passed
to the camera via the 26-pole cable and it appears in
the viewfinder when the play function of the recorder
is started and the VF signal selection switch is set to
external.